steps:
  - bash: |
      set -e
      toolchain=$TOOLCHAIN
      if [ "$toolchain" = "" ]; then
        toolchain=stable
      fi
      curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain $toolchain
      echo "##vso[task.prependpath]$HOME/.cargo/bin"
    displayName: Install rust (unix)
    condition: ne( variables['Agent.OS'], 'Windows_NT' )

  - script: |
      IF "%TOOLCHAIN%"=="" (SET TOOLCHAIN=stable-%TARGET%)
      curl -sSf -o rustup-init.exe https://win.rustup.rs
      rustup-init.exe -y --default-toolchain %TOOLCHAIN%
      echo ##vso[task.prependpath]%USERPROFILE%\.cargo\bin
    displayName: Install rust (windows)
    condition: eq( variables['Agent.OS'], 'Windows_NT' )

  - script: |
        rustc -Vv
        cargo -V
    displayName: Query rust and cargo versions